scholarly journals Komunitas Makrozoobentos pada Substrat Dasar Lunak Di Muara Sungai Wulan, Demak

2020 ◽  
Vol 9 (1) ◽  
pp. 19-26
Author(s):  
Narendra Prasidya Wishnu ◽  
Retno Hartati ◽  
Jusup Suprijanto ◽  
Nirwani Soenardjo ◽  
Gunawan Widi Santosa
Keyword(s):  
Random Sampling ◽  
Organic Matter Content ◽  
Matter Content ◽  
Survey Method ◽  
Suitable Habitat ◽  
Diversity Analysis ◽  
Soft Substrate ◽  
Sediment Samples ◽  
Central Java ◽  
Abundance And Diversity

Muara Sungai Wulan yang terletak di Pantai Demak, Jawa Tengah,merupakan habitat yang baik bagi komunitas makrozoobentos. Habitat tersebutdicirikan dengan sedimen pasir, lanau dan lempung, karena pada beberapa tempat merupakan substrat dasar lunak yang didominasi oleh sedimen lanau. Identifikasi jenis makrozoobentos dan analisis keanekaragamannya penting untuk menentukan kondisi ekosistem substrat lunak tersebut.Tujuan dari penelitian ini adalah untuk mengidentifikasi jenis dan mengetahui struktur komunitas makrozoobentos pada substrat lunak di perairan Delta Wulan, Demak. Metode survei eksploratif diaplikasikan pada penelitian ini dan purposive random sampling dilakukan pada saat mengambil sample sedimen pada12 titik penelitian dengan menggunakan van veen grab sampler. Analisa makrozobentos dan ukuran butir dilakukan terhadap sampel sedimen. Penelitian menemukan 24 spesies makrozoobentos yang termasuk dalam 4 filum, yaitu Arthropoda, Cnidaria, Echinodermata dan Moluska. Titik 5 adalah titik dengan nilai kelimpahan dan keanekaragaman tertinggi adalah Anadara. Terdapat dominansi 4 species yang berbeda disemua titik pengambilan sampel, yaitu Anadara sp., Paphia sp., Cominella sp. dan Gemmula sp. Sedimen pada daerah penelitian termasuk klasifikasi lanau komposisi pasir 2,5-22,14%, lanau 67,82-94,79% dan lempung 0-22,86% serta kandungan bahan organik total yang dikategorikan rendah-sedang dengan nilai berkisar 3,0-14,83%. Adanya dominasi jenis tersebut, maka substrat lunak merupakan habitat yang baik untuk moluska, khususnya bivalvia, sehingga daerah tersebut menjadi tempat penangkapan kerang.  Wulan estuary, located in Demak regency, Central Java, is a suitable habitat for the macrozoobenthos community. The habitat is characterized by sand, silt, and clay sediments, which in some places are soft substrates dominated by silt sediments. Identification of macrozoobenthos types and diversity analysis is important to determine the condition of the soft substrate ecosystem. The purpose of this study was to identify species and determine the structure of the macrozoobenthos community on soft substrates in the waters of Delta Wulan, Demak. Explorative survey method was applied in this study while purposive random sampling was carried out to collect the sediment samples at 12 research stations using a Van Veen grab sampler. Macrozoobenthos and grain size analyzes were performed used the sediment samples obtained. The study found 24 species of macrozoobenthos, which included 4 phyla, namely Arthropods, Cnidaria, Echinoderms and Molluscs. Station 5 has the highest value of abundance and diversity Anadara. Four different genera are dominant at all sampling points, namely Anadara sp., Paphia sp., Cominella sp., and Gemmula sp. Sediments in the study area included silt classification in which the composition of sand 2,5-22,14%, the silt of 67,82-94,79%, and loam of 0-22,86% and total organic matter content which was categorized as low-moderate with values ranging from 3,0-14,83%. The dominance evidence in this estuary concluded that soft substrate is a suitable habitat for mollusks, primarily bivalves; therefore this was the capture area of bivalve.

scholarly journals ANALYSIS OF ORGANIC MATERIAL CONTENT AND ABUNDANCE OF MACROZOOBENTHOS IN THE SOUTH BENGKALIS ISLAND, RIAU PROVINCE

2021 ◽  
Vol 4 (2) ◽  
pp. 127-133
Author(s):  
Muhamad Razid ◽  
Bintal Amin ◽  
Efriyeldi Efriyeldi
Keyword(s):  
Organic Matter ◽  
Regression Analysis ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Organic Matter Content ◽  
Matter Content ◽  
Survey Method ◽  
Simple Linear Regression ◽  
Weak Correlation ◽  
Sediment Samples

This study was conducted in July-August 2020 by using sediment samples and macrozoobenthos in the southern part of Bengkalis Island, Riau Province. The aim of this study is to find out how much the organic matter content, the abundance of macrozoobenthos, and the correlation between the organic matter content of the sediments to the abundance of macrozoobenthos. This study used a survey method consisting of 3 stations with 3 transects in each station. The organic matter content of sediments revolved from 4.85 to 8.52% in the waters of the southern part of Bengkalis Island. The highest organic matter content was at station III, namely 8.52%, while the lowest organic matter content was at station II namely 4.85%. The abundance of organisms found at the three research stations was 4.04 to 5.96 ind/m2. The abundance average at all macrozoobenthic research stations was 4.93 ind/m2. The results of simple linear regression analysis of organic matter content and abundance of macrozoobenthos showed a very weak correlation

scholarly journals Polychaete fauna from the intertidal zone of the Kneiss Islands (central Mediterranean Sea)

2017 ◽  
Vol 18 (2) ◽  
pp. 215
Author(s):  
N. MOSBAHI ◽  
J.C. DAUVIN ◽  
L. NEIFAR
Keyword(s):  
Mediterranean Sea ◽  
Seasonal Variations ◽  
Organic Matter Content ◽  
Temporal Distribution ◽  
Matter Content ◽  
Central Mediterranean ◽  
Community Patterns ◽  
Central Mediterranean Sea ◽  
Abundance And Diversity ◽  
A Site

The spatial and temporal distribution, abundance and assemblage structure of polychaete communities in the Kneiss Islands (central Mediterranean Sea) was studied at 42 stations selected among seagrass Zostera (Zosterella) noltei Hornemann meadows and unvegetated habitats sampled from April 2014 to January 2015. The Kneiss Islands represent a site of international interest in terms of their ornithological diversity (Important Bird Area, Ramsar Site and SPAMI). A total of 18,026 individuals and 92 species of polychaetes belonging to 25 families were identified. Analysis of the trophic structure reveals that the majority of stations are strongly dominated by deposit feeders (51.2%), followed by carnivores (34.8%) and suspension feeders (14%). Polychaete diversity and abundance were higher on the vegetated stations. Four polychaete assemblages are identified using MDS analysis. The distribution of polychaete assemblages are influenced by edaphic factors, particularly sediment structure and organic matter content. Seasonal variations of the polychaete community patterns at 20 stations show a maximum abundance and diversity during spring and summer and a minimum during winter. Seasonal fluctuations follow the seasonal variations of the environmental factors such as temperature and salinity, and correspond also to the lifestyle of the dominant species.

Trace metals in fine grained sediments of the Kaštela Bay, adriatic sea

1998 ◽  
Vol 38 (11) ◽  
pp. 169-175 ◽  
Author(s):  
D. Bogner ◽  
M. Juracic ◽  
N. Odžak ◽  
A. Baric
Keyword(s):  
Trace Metals ◽  
Adriatic Sea ◽  
Sediment Cores ◽  
Organic Matter Content ◽  
Matter Content ◽  
Homogeneous Distribution ◽  
Sediment Samples ◽  
Fine Grained ◽  
The Past ◽  
Cu And Zn

The aim of the present work was to study the past and present contamination of the Kaštela bay using chemical analysis of selected trace metals (Cd, Pb, Zn, Cu, Cr, Mn and Ni) in fine grained sediment cores. Sediment samples were taken at three locations with silty sediments. The highest concentrations of Cd, Pb, Cu and Zn and the lowest concentration of Ni were found in the east, the most contaminated part of the Bay. The decrease of Cd, Pb, Cu and Zn concentrations with increased depth, indicates their anthropogenic origin. Homogeneous distribution of Cr, Mn and Ni in the sediment cores indicates their terrigenous origin. The correlation of Zn, Cu and Ni concentration with the organic matter content was determined.

scholarly journals Relationship of Organic Content in Sediment with Morphometric Mangrove Leaves (Rhizophora apiculata) in the West Mangrove Ecosystem, Dumai City, Riau Province

2021 ◽  
Vol 26 (1) ◽  
pp. 54
Author(s):  
Mia Audina ◽  
Sofyan Husein Siregar ◽  
Bintal Amin
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Mangrove Ecosystem ◽  
Organic Content ◽  
Matter Content ◽  
Leaf Length ◽  
Survey Method ◽  
Mangrove Forests ◽  
Rhizophora Apiculata ◽  
Reduced Density

The damage rate of mangrove forests in Indonesia is considered as the fastest and largest in the world. The reduced density of mangroves can be influenced by the water quality and the organic matter content around the mangrove ecosystem, causing changes in the mangrove leaves both in the shape of the length and width. This study was conducted in the mangrove ecosystem in the western part of Dumai City, with the aim of determining the morphometric size of the leaves of Rhizophora apiculata and its relationship with the content of organic matter in the sediment. The method used in this study was survey method, where observations and sampling were performed directly in the field and some of samples were analyzed in the laboratory. Mangrove density obtained from the research results ranges from 1966.66 - 4700 ind/ha, organic matter content 10.88 -17.21%. The morphometric size of the leaf length varies from 13.03 - 15.05 cm, the leaf width varies from 4.65 - 5.42 cm, and the length of the petiole varies from 1.59 - 1.91 cm. There is no significant relationship between the mangrove leaf morphometric with sediment organic matter in the studied area.

scholarly journals HUBUNGAN TEKSTUR SEDIMEN DAN KANDUNGAN BAHAN ORGANIK DENGAN KELIMPAHAN MAKROZOOBENTOS DI MUARA SUNGAI SILANDAK, SEMARANG

2017 ◽  
Vol 5 (4) ◽  
pp. 363-370
Author(s):  
Dewi Meynita ◽  
Max Rudolf Muskananfola ◽  
Sri Sedjati
Keyword(s):  
Organic Matter ◽  
Random Sampling ◽  
Diversity Index ◽  
Organic Matter Content ◽  
Domestic Sewage ◽  
Matter Content ◽  
Time Interval ◽  
Clay Loam ◽  
Sediment Texture ◽  
Coastal Reclamation

ABSTRAK Muara Sungai Silandak merupakan salah satu subsistem drainase wilayah Semarang Barat yang bermuara ke teluk Semarang.Muara merupakan tempat akumulasi buangan limbah domestik dan pabrik. Dilakukannya reklamasi pantai pada bagian hilir Muara Silandak dapat menyebabkan sedimentasi yang akan mempengaruhi keberadaan makrozoobentos. Tujuan dari penelitian ini adalah mengetahui tekstur sedimen, kandungan bahan organik dan kelimpahan makrozoobentos.Materi yang digunakan dalam penelitian ini adalah sampel sedimen dan sampel makrozoobentos pada setiap stasiun yang berlokasi di muara sampai pesisir Pantai Maron.Penelitian ini dilakukan dengan sampling acak atau Random Sampling dengan empat stasiun.Pada setiap stasiun terdapat tiga titik sampling, sampel sedimen dan makrozoobentos diambil pada setiap titik kemudian dikomposit perstasiun.Sampling dilakukan pada interval waktu dua minggu dengan tiga kali pengulangan.Hasil analisis tekstur sedimen pada stasiun I memiliki tekstur liat sedangkan stasiun II, III dan IV memiliki tekstur lempung liat berpasir. Hasil kandungan bahan organik pada stasiun I,II, III dan IV sebesar 19,33%, 15,20%, 13,40% dan 10,67%. Sedangkan kelimpahan makrozoobentos yang didapatkan stastiun I sebesar 652 ind/m3 , stasiun II 696 ind/m3 , stasiun III 783 ind/m3 (tertinggi) dan stasiun IV 261 ind/m3 dengan katagori indeks keanekaragaman belum tercemar dan tidak adanya jenis yang mendominasi.  Kata kunci: Tekstur Sedimen, Kandungan Bahan Organik, Kelimpahan Makrozoobentos, Muara Sungai Silandak Semarang.   ABSTRACT Silandak Estuary is one of the subsystem drainage areas in West Semarang that flow into the bay of Semarang. The estuary is a place of accumulation of domestic sewage and factories. Coastal reclamation at the downstream estuary Silandak causing sedimentation that will affect the existence of macrozoobenthos. The purpose of this research was to know the sediment texture, organic matter content and abundance of macrozoobenthos. The material used in this research is the sediment samples and samples of macrozoobenthos at any station located at the estuary to the coast of Maron. The research used random sampling with four stations. At each station there are three sampling points, samples of sediment and makrozoobentos taken at any point which then composite sample at each station. The sampling was done with time interval of two weeks with three repetitions. The results of the sediment texture at the station I has the texture of clay while the station II, III and IV have a texture of sandy clay loam. The results of the organic material content at stations I, II, III and IV is amounted 19,33%, 15,20%, 13,40% and 10,67% and while abundance of makrozoobentos at station I are 652 ind/m3, station II 696 ind/m3, station III 783 ind/m3(higher) and station IV 261 ind/m3 with a diversity index categories clean water zone and not found the dominant species. Keywords: Sediment Textures, Organic Matter Contents, Abundance of Makrozoobentos, Silandak Estuary Semarang. 

scholarly journals KEANEKARAGAMAN MOLUSKA BERDASARKAN TEKSTUR SEDIMEN DAN KADAR BAHAN ORGANIK PADA MUARA SUNGAI BETAHWALANG, KABUPATEN DEMAK (Molluscs Diversity based on Sediment Texture and Organic Matter Content in Betahwalang Estuary, Demak Regency)

2017 ◽  
Vol 13 (1) ◽  
pp. 58
Author(s):  
Hana Nisau Shalihah ◽  
Pujiono Wahyu Purnomo ◽  
Niniek Widyorini
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Survey Method ◽  
Sediment Texture ◽  
Positive Correlation ◽  
Purposive Sampling ◽  
Relationship Of ◽  
The Relationship ◽  
Contaminant Load

 Muara Sungai Betahwalang merupakan ekosistem yang mendapat masukan dari kegiatan penduduk daerah pemukiman sekitar dan dari Sungai Jajar. Muatan pencemar akan mempengaruhi kondisi muara terutama substrat dasar pada sungai Betah walang. Tekstur dan kandungan bahan organik di dalam sedimen menentukan keberadaan moluska. Tekstur sedimen merupakan tempat untuk menempel dan merayap atau berjalan, sedangkan bahan organik merupakan sumber makanan bagi moluska. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman moluska, tekstur sedimen dan kadar bahan organik, serta untuk mengetahui hubungan antara variabel. Metode yang digunakan adalah metode survey dengan pengambilan sampel menggunakan metode Purposive Sampling. Sampel diambil pada 5 stasiun dan masing-masing stasiun terdiri dari 3 titik. Hasil penelitian menyebutkan bahwa terdapat 10 genera dari kelas Gastropoda yaitu Littorina, Cerithidea, Turritella, Clathrodrillia, Fasciolaris, Conus, Filopaludina, Pila, Melanoides dan Telescopium dan 4 genera dari kelas Bivalvia yaitu Anadara, Mesodesma, Mytilus dan Donax. Karakteristik substrat di muara Sungai Betahwalang adalah liat dan liat berpasir dengan kadar bahan organik berkisar antara 6,2-17,4 %. Hubungan moluska dengan tekstur sedimen terutama liat mempunyai korelasi positif dengan persamaan y = 6.94x + 224.0 (r = 0.535). Hubungan moluska dengan bahan organik mempunyai korelasi positif dengan persamaan y = 33.44x + 271.1 (r = 0.507) dan R2 = 0.257   Betahwalang Estuary is an ecosystem that gets input from the activities of the surrounding residents area and from the Jajar River. Contaminant load from upstream will affect the condition of the substrate in Betah walang river. Texture and organic matter content in the sediments determine the presence of molluscs. Sediment texture is a place for molluscs to stick, crawl or walk, while organic matter is a source of food for them. The purpose of this research is to know the diversity of molluscs, sediment textures and organic matter content, and to know the relationship between those variables. The method used is survey method with sampling using Purposive Sampling method. Samples were taken at 5 stations and each station consisted of 3 spots. The results show that 10 genera of the Gastropod class were Littorina, Cerithidea, Turritella, Clathrodoillia, Fasciolaris, Conus, Filopaludina, Pila, Melanoides and Telescopium and 4 genera of Bivalves class were Anadara, Mesodesma, Mytilus and Donax. Betahwalang estuary are characterized by clay and sandy clay with organic material content between 6,2-17,4%. The relationship of molluscs with sediment texture, especially clay, has a positive correlation with the equation y = 6.94x + 224.0 (r = 0.535). The relationship of molluscs with organic matter has a positive correlation with the equation y = 33.44x + 271.1 (r = 0.507). 

scholarly journals Lead in the environment of Lake Wigry (NE Poland)

2011 ◽  
Vol 11 (2) ◽  
pp. 59-68 ◽  
Author(s):  
Urszula Aleksander-Kwaterczak ◽  
Anna Kostka
Keyword(s):  
Surface Layer ◽  
Sediment Cores ◽  
Organic Matter Content ◽  
Matter Content ◽  
Sediment Type ◽  
Sediment Samples ◽  
Ne Poland ◽  
Positive Linear Correlation ◽  
Component Content ◽  
Spatial And Vertical Distribution

Lead in the environment of Lake Wigry (NE Poland)Analysis was performed for lead content in the sediments of Lake Wigry (NE Poland), taking into account lithology, basic chemical component content and physical characteristics of sediment, Several hundred sediment samples from different parts of the lake and peatland around the lake, were collected. Their locations were determined by GPS and the depth of sediment by echosounder. The surface layer (0-10 cm) of sediment and sediment cores were taken to determine the spatial and vertical distribution of Pb. Concentrations of lead in the surface sediment range from 2.52 to 469 mg kg-1. One of the most important factors influencing spatial distribution of Pb is sediment type. The highest content of Pb was found in samples of organic gyttja and the lowest in clastic sediment samples. Strong positive linear correlation (r = 0.7) between organic matter content and Pb concentration in sediment was observed. It may be the result of simple bio-accumulation of lead. A large influence of sediment location on Pb distribution was found. The largest concentration of this element was found in sediment of the Wigry Basin. The major part of Pb accumulates in the surface layer of sediment.

scholarly journals Bulk density and organic carbon contents of soil pedons influenced by different tree species

2019 ◽  
Vol 11 (2) ◽  
pp. 148-153
Author(s):  
C.M. Ahukaemere ◽  
D.N. Osujieke ◽  
V.O. Ugwa ◽  
A.O. Ogwuche
Keyword(s):  
Organic Carbon ◽  
Bulk Density ◽  
Tree Species ◽  
Organic Matter Content ◽  
Matter Content ◽  
Survey Method ◽  
Available Phosphorus ◽  
Rubber Plantation ◽  
Organic Carbon Content ◽  
Southeastern Nigeria

Abstract. Bulk density and organic matter content of soil are important soil attributes used in predicting the productivity potentials of soil and overall soil quality. The distribution of soils bulk density and organic carbon in horizons of soil pedons under different three tree species (Hevea brasiliensis – rubber, Pentaclethra macrophylla – oil bean and Irvingia gabonensis – ogbono) in Owerri, Southeastern Nigeria were investigated. A random survey method was used in field sampling. In all, three profile pits were dug, one in each site. A total of 36 soil samples were collected and analyzed for the study. Samples were collected at different horizon levels (A, AB, Bt1 and Bt2). Three representative samples were collected from each horizon. Bulk density, organic carbon and other routine analyses were performed using routine laboratory techniques. Mean, coefficient of variation and correlation analyses were analyzed. From the results obtained bulk density increased with depth, ranging from 1.05-1.81 g cm-3 in the rubber plantation, 1.02-1.70 g cm-3 in ogbono plantation and 1.11-1.57 g cm-3 in oil bean plantation. Bulk density decreased with the increase the organic carbon content. However, mean bulk density values irrespective of tree species did not exceed critical limits ranging from 1.28 to 1.32 g cm-3 as appropriate. Organic carbon ranged from 0.06-0.89 g kg-1 in rubber plantation, 0.42-0.87 g kg-1 in ogbono plantation and 0.72-1.25 g kg-1 in oil bean plantation. The epipedal horizons contained higher organic carbon than the endo-pedal horizons. The average organic carbon contents of the pedons were lower than the critical value irrespective of the tree species. The oil bean plantation had higher organic carbon and total nitrogen than the ogbono and rubber plantation while the ogbono plantation contained higher available phosphorus than the other two plantations studied.

scholarly journals Truss Morphometric and Meristic Characters of Male and Female Donkey Croaker (Pennahia anea (Bloch 1793)) Taken from Asemdoyong Auction Center Pemalang, Central Java

Jurnal Biota ◽  
1970 ◽  
Vol 7 (2) ◽  
pp. 118-128
Author(s):  
Adenia Arih Utarini ◽  
Suhestri Suryaningsih ◽  
Agus Nuryanto
Keyword(s):  
Random Sampling ◽  
Sampling Technique ◽  
Demersal Fish ◽  
Survey Method ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Male And Female ◽  
Parametric Test ◽  
Central Java ◽  
Males And Females

Pennahia anea is among of the demersal fish landed at Asemdoyong Fish Auction Centre, Pemalang. P. anea doesn't show sexual dimorphism, so that other characters are needed to differentiate male and female individuals, i.e. truss morphometric and meristic characters. Previous studies have shown that truss morphometric and meristic can differentiate between male and female individuals. This study aims to describe the morphometric and meristic truss characters and determine the truss morphometrically and meristic characters that distinguish between males and females of Pennahia anea. The research used a survey method with a purposive random sampling technique. Male and female individuals of P. anea were examined based on their meristic and truss morphometric characters. The data were analyzed statistically using Mann Whitney non-parametric test. The result proved that male and female were significantly different in seven out of the 31 truss distances. Male individuals had a larger size than female individuals in three truss distances. In contrast, the male had a smaller size than the female individuals in four out of seven truss distances that distinguish both sexualities. The soft fin radius of the ventral fin was significantly different between male and female of P. anea. It could be concluded that male and female individuals of Pennahia anea have different truss distances and meristic characters with seven truss distances and one meristic character are different

scholarly journals Hubungan antara Jenis Sedimen Pasir dan Kandungan Bahan Organik di Pantai Kartini, Jepara, Jawa Tengah

2020 ◽  
Vol 9 (4) ◽  
pp. 423-430
Author(s):  
Gadisza Asmara Yudha ◽  
Chrisna Adhi Suryono ◽  
Adi Santoso
Keyword(s):  
Grain Size ◽  
Organic Matter ◽  
Data Collection ◽  
Sediment Cores ◽  
Organic Matter Content ◽  
Matter Content ◽  
Primary Data ◽  
Sediment Type ◽  
Sediment Samples ◽  
Community Activities

Pantai Kartini merupakan salah satu kawasan wisata di Kabupaten Jepara. Berbagai aktifitas masyarakat serta infrastruktur perairan menjadi kebutuhan yang sangat krusial dengan letak Pantai Kartini. Adanya aktivitas dan bangunan dapat menyebabkan perubahan sebaran ukuran butir dan kandungan bahan organik. Penelitian ini memiliki tujuan untuk mengetahui jenis dan klasifikasi sedimen serta jumlah kandungan bahan organik yang terdapat dalam sedimen di Pantai Kartini, Jepara. Pengambilan data pada penelitian ini yaitu pengambilan data primer yang berupa sampel sedimen dengan menggunakan sediment core. Dilanjutkan dengan analisis sampel sedimen dan analisis kandungan bahan organik. Hasil penelitian menunjukkan bahwa di perairan Pantai Kartini, Jepara memiliki jenis sedimen pasir (sand) dimana nilai ukuran butir tersebut berkisar dari 81-96%, yang mana pada Stasiun 1 rata-rata sebesar 91,6-96%, Stasiun 2 rata-rata sebesar 93,5-96,9%, dan Stasiun 3 rata-rata sebesar 81,4-92,9%. Sedangkan, Kandungan Bahan Organik yang terdapat di perairan tersebut memiliki konsentrasi berkisar dari 5-14% yang termasuk dalam kriteria rendah-sedang, dimana pada Stasiun 1 rata-rata sebesar 10,9-13,3%, Stasiun 2 rata-rata sebesar 5,92-10,18%, dan Stasiun 3 rata-rata sebesar 7,7-14%. Kartini Beach is one of the tourist areas in Jepara Regency. Various community activities and water infrastructure have become crucial needs in Kartini Beach. The existence of activities and buildings can cause changes in the distribution of grain size and content of organic matter. This study aims to determine the type and classification of sediments and the amount of organic matter content contained in sediments in Kartini Beach, Jepara. Data collection in this study is primary data collection in the form of sediment samples using sediment cores. Followed by analysis of sediment samples and analysis of organic matter content. The results showed that in Kartini Coast waters, Jepara had a sand sediment type where the grain size values ranged from 81-96%, which at Station 1 averaged 91,6-96%, Station 2 on average amounted to 93,5-96,9%, and Station 3 averaged 81,4-92,9%. Meanwhile, the content of organic matter contained in these waters has concentrations ranging from 5-14% which are included in the criteria of low-moderate, where at Station 1 an average of 10,9-13,3%, Station 2 an average of 5,92-10,18%, and Station 3 averaging 7,7-14%. 

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